Estrous cycle: A short circuit of the complete reproductive cycle.

Estrous Cycle Synchronization In

E STRUS and ovulation in gilts have been successfully inhibited by daily injections of progesterone (Ulberg et al., 1951; Baker et al., 1954) and more recently by the inclusion of progestational compounds in the feed (Nellor, 1960; Dzuik and Baker, 1962). The successful use of orally active progestational agents to synchronize the estrous cycles of gilts without a subsequent reduction in fertil...

A preliminary study on the estrous cycle of caspian and darashuri mares in iran

Physiology of the Estrous Cycle 1

Current and emerging concepts of follicle growth and ovulation, hypothalamic-pituitaryovarian interactions, corpus luteum function and estrous cycle regulation in cattle, sheep and swine are reviewed. Follicles grow, regress and are replaced by other large follicles continuously throughout the cycle; intra-ovarian factors appear to play important roles in this process. Estradiol concentrations ...

Effect of xylazine and yohimbine on the phasic pain during the estrous cycle in the rat

The aim of the present study was to investigate the effect of α2-adrenergic agonist (xylazine) andantagonist (yohimbine) on phasic pain during estrous cycle in female rats. Adult female rats weighing 180-220 g were kept under controlled temperature (21-24°C) and light/dark conditions (light on at 6:00 a.m. and light off at 6:00 p.m.). Animals were divided into four groups: 1) control group whic...

Hypothalamic Expression of KiSS1 and RFamide-related Peptide-3 mRNAs during The Estrous Cycle of Rats